Mine-hoist recorder.



O. W. INGBLS.

MINE HOIST RECORDER.

APPLICATION FILED JAN.16, 1913.

1 79,493, Patented Nov. 25, 1913.

5 SHEBTS-SHEET 1.

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Patented Nov. 25, 1913.

5 BHEETBBHEET 2.

WITNESSES:

A TTORNE'Y.

0. W. INGBLS. MINE HOIST RECORDER.

APPLICATION FILED JAN. 16, 1913. 07 3, I Patented Nov. 25, 1913.

6 BHBBTS-SHBBT 3.

f 0 I Q g m 5: I 6 7 7 71 151 v 7 6 54 55w 7 l 2 2 w 9 L f 71 2: 20 I i i% I 3 l 45 1a 1/ 8 g I 1 F so 3 8 36 fZ Wfi 1 4 er H 51 H g' 28 21 k llll I 0 F A TTOR NE Y.

O. W. INGELS. MINE HOIST RECORDER. APPLICATION FILED JAN. 1a, 1913.

1,079,493. Patented Nov. 25, 1913.

5 SHEETS-SHEET 4.

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56 73 0n? h [nyz/s- Q I 2 BY I W6 95% 15- ATTORNEY.

0. W. INGELS. MINE HOIST RECORDER. APPLICATION FILED J1N.16, 191s.

Patented Nov. 25, 1913.

5 SHEETS-SHEET 5.

WITNESSES: 106

Q. 65km ATTORNEY.

ORIE W. INGELS, 0F CARLYLE, ILLINOIS.

MINE-HOIST macabre.

Specification of Letters l atent.

Patented Nov. 25, 191-3.

Application filed January 16; 1913. Serial No. 742,447.

To all whom, it may concern:

Be it known that I, ORIE W. INGELs, a citizen of the United States, residing at Carlyle, in the county of Clinton and State of Illinois, have invented certain new and useful Improvements in Mine-Hoist Recorders, of which the following is a full, clear and exact description, reference being had to the acoom anying drawings, forming a part hereo My invention has relation to improvements in mine hoist recorders; and it consists in the novel details of construction more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is an elevation more or less diagrammatic in character, of a shaft-house, engine-house, and engine showing the application of my invention, and showing also a vertical section of a mine-shaft; F ig. 2 is a front elevation of my improved recorder; Fig. 3 is a top plan thereo Fig. 4 is an end elevation looking toward the right on Fig. 3, parts being broken away; Fig. 5 is a vertical cross-section on the line 5-5 of Fig. 3, parts being in elevation; Fig. 6 is an enlarged vertical sectional detail of the trip-marker depressing lever and parts connected thereto, on the line 6-6 of Fig. 3; Fig. 7 is a vertical sectional detail on the line 77 of Fig. 5 showing the manner of engagement between the governor spindle; and the rock-shaft which controls the trip-marker depressing lever; Fig. 8 is a horizontal sectional detail on the line 8-8 of Fig. 6 showing the connection between the extension lever and the link leading from the shifting lever actuated by the overnor-shaft; Fig. 9 is an elevational detail of one of the marker depressing levers and the trigger and hammer controllin the same, and the standard to which the trigger and hammer levers are pivoted, parts being 'in section; Fig.10 is an elevation of a part of the recorder drum and sheet carried thereby, parts being in section; Fig. 11 is a vertical section on the line 1111 of Fig. 12 showing the dial 0f the indicator and the oscillating lever which controls the cables leading to the marker with which the indicator is identified; Fig. 12 is a sidevie'w of the indicator; Fig. 1-3 is a horizontal section on'the line 13-13 of Fig. 11; Fig. 14 is a diagrammatic plan view of a portion of the sheet covering the recorder drum, unfolded; Fig. 15'is a diagrammatic elevation showing the normal position of the trigger and pawl thereof, and the hammer lever engaged thereby; and Fig. 16 is a similar diagrammatic view of the parts after the trigger has been raised to depress the hammer lever, the trigger being ready to resume its normai position,

The present invention is specially directed to the recording of dataincidental to hoisting operations in mines, quarries, excavations, and the like, though obviously not restricted thereto in its application.

The object of the invention is to provide a drum or equivalent cylindrical member equipped with a peripheral chart. on which may be impressed a record of the times at which any signal is given to the engineer for hoisting or lowering a car or skip; also a record of the duration or length of time of any trip to and from the bottom of the mine, it being understood that as the impressions forming the record, are made on the chart, the drum is being rotated .aboutits axis by means of a suitable clock mechanism or equivalent chronometric motor. The chart ser'vesthe purpose of tabulating andrecolding in the order of their occurrence all the incidents connected with any trip to and from the bottom of the mine or intermediate points, as well as recording the duration of these incidents. The record so kept at once shows whether the men employed in arid about the mine have attended to their duties; whether they were idling or wasting time, and in'short, it keeps a check on the conduct of the employees.

The advantages of the invention will be apparent from a detailed description thereof which is as follows Referring to the drawings, S represents a mine-shaft, H the shaft-h0use, M the enginehouse', E the engine, D the hoisting drum, I the indicator dial, a the bottom signalbell, b the top signal-bell, and c the cord leading from the bell-hammer to the shafthouse, B, B, the cars or ore skips, h the hoisting cables therefor winding over and unwindingfrom the drum D, all here shown conventionally, and Well understood in the art. Referring now more particularly to the invention forming a part of the signal and hoisting system, F represents a suitable frame or mounting made of wood or iron and which may be of any suitable design. Se'cii'r'ed to the front of the frame by means of' a bracket 1 (or any equivalent manner) is a clock C, (or other 'chronometrie motor) the gearing of which drives a pinion 2, the connection being made through an intermediate gear 3 on a s indle 4, projecting from the clock-works t rough the back of the clock-casing (Fi 3), such connection falling within the Sklll of an ordinary mechanic, and here shown more or less conventionally. The pinion 2 meshes with a gear 5 slidin ly feathered to the front end of the recor er-drum-shaft 6, mounted on the frame F, the gear 5 while turning with the shaft, being at the same time capable of a sliding movement along the shaft when occasion arises to disconnect the same from the pinion 2 and hence from the clock. The ear 5 however is maintained against accidental longitudinal displacement on the shaft 6 by means of the tong-levers 7, 7, pivotally mounted about a pm or stud 8 above the hub 5' of the ear, the ends of the long arms of the levers ing provided with pins 9 engagingh an annular peripheral ve 10 in said ub, the expanding spring 11 between the short arms of the levers forcing the pins 9, 9, into the groove aforesald. To release the gear, the operator forces the short lever-arms together thereby drivmg apart the long arms and withdrawing the pins out of the groove. This leaves the gear 5 free to be shoved along the shaft out of engagement with the pinion 2 which remains in permanent gear with the clock-works. The opposite end of the shaft 6 is provided with a spiral formation or screw-thread traversed b a pin 12 adjacent the shaftbearing at t at end (Fig. 10), said pin serving the function of a nut or screw-bearin and causing the shaft 6 to move longitudinally or arallel to its axis when rotation is imparted thereto by the clock-mechanism or by hand. In lieu of the pin 12, the hearing at that end of the shaft might be interiorl screw-threaded when we would have a fu 1 equivalent for the pin 12.

Secured to the shaft 6 within the frame F isa recorder-drum 13 over the periphery of which is detachably mounted (in any manner appeal to the skilled mechanic a recorder-sheet which is characteriz by a continuous spiral line we encircling the sheet and drum) the spiral being pitched to conorm to the itch of the screw on the shaft 6.

The spira line thus divides the ripheral surface of the sheet B into a series of contiguous recording or divisions on w ich impressions of suitable fpllungcrs or markers ma be made as more lly hereinafter descri d. For the present it is suflicient to state that a single wrap of the line m (correspgnding to one revolution of the drum 13 a ut its axis) is divided into main divisions (1 representing minutes, whi in turn are subdivided into twelve divisions by lines .3 representing five seconds, theclock C imparting a revolution to the shaft 6 and drum 13 once every hour. Disposed across the drum, and maintained in proper proximity thereto by the angle-plates or members 14, 14, secured to the top of the frame F, is an ink-ribbon 15, the cores or spools of the ribbon being mounted respectively on a spindle 16 secured between the brackets 17, 1 on the outside of one of the angles 14. and on a shaft 18 secured between the bracket 19, on the outside of the opposite angle 14 and a front bearing 20. The outer terminal of the shaft 18 is provided with a ratchet disk 21, which is engaged by an advancing pawl 22 (the engagement being effected by a flexed spring 23) pivoted to an arm 24 whose one end loosely embraces the shaft 18, the arm being normally held in a downwardly inclined position (Fig. 4) by a contracting spring 25 secured to the arm and to the frame F respectively. By lifting or oscillating the arm 24 upwardly, the pawl 22 thereof will advance the ratchet 21, and hence rotate the shaft 18 and when the arm is released it is retracted by the sprin 25, the pawl 22 engaging another tooth o the series. In that way the shaft 18 may be turned periodically so as to cause periodic advances or feed of the ink ribbon, rotation of the ratchet 21 in the wrong direction being prevented by the locking pawl 26 secured in present instance to a Z-bar or plate 27 between the standards or brackets 28, 29, the latter together with a third bracket being secured to the angles 14, 14, and the bracket 28 being secured to the bracket 30 in any mechanical manner. The mechanism er se for advancing or feeding the ink rib n is not here claimed but is alluded to in order that its relation to the recording mechanism may be more conveniently brought out later.

The recording mechanism and the means by which the same is actuated and controlled may be described as follows :-Between the angles 14, 14, and above the ribbon 15 is mounted a block 31 through which freely operate a series (five) of lungers or styli 32 terminating at the to in heads 33 between which and the top 0 the block and encircling the plungers are interposed compression springs 34. The lower ends of the plungers are a apted to impinge against the ribbon15 within the s ace between two consecutive wraps of the line m on the record-sheet B (Fig. 5). To do this the plungers are caused to converge downwardly, but bein quite loose in the passageways through w ich they operate, they are readily depressed by an impact, blow, or pressure exerted upon the heads 33 exerted in a vertical plane (of course the middle plunger is vertical, and the one on either side of it nearly so, the maximum inclination being in e outer pair of plungers).

If a stylus is depressed only for a moment, it will leave an impression 1n the form of a dot on the sheet R; if it be held depressed for any considerable period it will mark a line of greater or less length on the sheet Ron account of the constant rotation of the drum 13. In the practice of my invention two inner styli or markers are used to mark lines on the record sheet, the outer stylus on one side, and the outer two on the opposite side of the line markers being utilized for dot impressions as more fully later to appear. The dot-im ression markers or styli are adapted to be orced against the inkr1bbon and against the drum by a series of vertically oscillating depression levers 35, mounted pivotally in a racket 36 secured between the angles 14, 14, on one side of the block 31, and having their inner ends properly flexed to remain permanently above the heads of their respective styli, it being'understood that these levers are susceptible of oscillation only in vertical planes. When thereforeany lever 35 has its stylus-engaging end depressed, it will force the stylus into contact with the revolving drum through the ribbon 15. The manner of actuating the levers 35 will appear later on. The line-marking st-yli on the other hand are actuated alternately by a depression lever 35 mounted pivotally in the forked bearing 37 on a plate 38 on the opposite side of the block 31, the fork 37 being swiveled to the plate 38 through the medium of a swivel stem or pin 39. The rotatable character of the fork' 37 thus allows the lever 35' to partake of an oscillation laterally, or in a horizontal plane whereby the free end of the lever may be brought alternately over one or the other of the line-marking styli. In Fig. 3 the lever 35 is shown over the third stylus, the second stylus being exposed.

The manner of imparting to the lever 35 its respective lateral (or horizontal) and vertical oscillations for the respective purposes of bringing its stylus-depressing or free end first over one line-marking stylus and then the other is as follows :-In the first place the device is provided with an ordinary ballgovernc-r G having the usual reciprocating or rising and falling spindle 40, the said governor being mounted over one end of the frame F in any convenient me chanical manner, the brace 41 serving to assist in the support of the bearing 42 through which operates the governor driveshaft 43. This shaft is geared up through belting 44vo-r equivalent manner to the shaft of the winding drum D (Fig. 1), said belt passing over the pulley or sheave 45 on the governor shaft. The outer projecting end of the shaft 43 carries a head 46 on which is I formed a spiral groove 47 with circular iterminals, which groove is adapted to be traversed first in one direction and then the fined in a other (depending on the direction of rotation of the shaft 43) by a pin 48 carried by the outer terminal loop t of a shifting lever 49 whose opposite end is pivotally coupled to a lug 50 on a diagonal brace 51 secured to the frame F. At an intermediate point of the lever 49 is pivotally or loosely coupled the outer end of a bent link 52 passed through and freely operating in the vertical legs of the angle-bars 14, 14. Between the members 14, 14, the link 52 is provided with a notched or recessed collar 52, the recess being loosely engaged by an arm 53 depending from and forming a part of the lever 35 (Figs. 3, 6). Hinged to the member 35 bet-ween the fork 3'7 and the arm 53 is the forked portion of a lever 54 which forms a hinged extension of the member 35, the free end of the extension having depending therefrom a link 55 which carries a weight V. A pin e is positioned on the arm 53 at such a point that when the member 54 is approaching its lowest position under the gravitating action of the weight W, it strikes the pin 6 and elevates the free end of the lever 35 so as to relieve its stylus from downward pressure. Vhen the member 54 however is elevated, the lever 35 is oscillated so as to cause its free 'end to bear on its stylus 32 and depress the same into engagement with the sheet It on the drum 13 (Fig. 6). Mounted in bearings 56, 57, identified with the governor mounting is a-rockshaft or spindle 58 to which is secured (adjacent the bearing 56) the boss 59 of an arm 60, said arm terminating at its free end in a fork 61, which straddles the lower reduced portion or neck 62 of the governor spindle 40, the fork members being thus con- 'oove formed about the neck 62. The end 0E1 57 carries an arresting pin or arm 63, the opposite end of the shaft being provided with an arm 64 to the free end of which is coupled loosely a link 65, the opposite end of which is loosely secured to the lever extension 54. About the shaft 58 is disposed a torsional spring 66, one end of which is secured to the bearing 57 and the opposite end to the boss 59, the spring when the rockshaft is released rocking the latter so as to depress the arm 64 to the position substantially as shown in the drawings (Figs. 2, 7). This brings us to the consideration of the means by which the depression of the levers 35, 35, is effected, and the relation of said means to the signal system employed about the mine. The levers 35 are all actuated by similar means and a description of one will suffice for all. Referring for convenience to Fig. 9 of the drawings, in which are selected for detailed illustration, the actuating means for the first member of the series of stylus-depression levers 35, L represents a trigger or lever pivoted atan intermediate he shaft 58 beyond the bearing and substantially horizontal position under- .69, being now free to act suddenly retracts point to the standard or bracket 30, the forked terminal of said trigger having pivoted thereto a pawl 67 swung normally beyond the terminal of the lever arm by the tension of the contracting spring 68 whose one end is secured to the pawl above the pivotal axis of the latter and whose opposite end is secured to the bracket 30. The spring 68 likewise serves to return the member L to normal position when released after being tripped, as presently to be seen. Pivotally secured to the bracket 30 is one end of a verticall oscillating hammer-lever 69 disposed para lel and contiguous to the trigger L, the free end of the lever 69 terminating in a head or hammer 70 which comes directly under the end of the short arm of the lever 35, said end being properly deflected or bent so as to be brought in the plane of oscillation of the hammer. The lever 69 is connected from a point adjacent to its axis of oscillation, to the bracket 30, by means of a contracting spring 71. If, as shown by dotted positions in Fig. 9, and diagrammatically in Figs. 15 and 16, we elevate the lever L, the pawl will be depressed. The free bottom edge of the pawl normally bears against a shoulder or offset 12. on the. lever 69 (Fig. 3), and as the outer lever arm of the lever L is raised the pawl which enga es the shoulder will depress the hammerever 69. In time the awl (describing as it does, the arc of a circle) will slip off the shoulder a. thus releasing the hammer lever 69. The spring 71 which was stretched during the depression of the lever .the lever and the 79 thereof, the sudden retraction musing the hammer to strike or to}; the bottom edge of the adjacent arm 0 the iever 35, raising said am and naturally depressing the opposite arm, whose free end is immediately over the stylus or marker. The saddenness of the impact of the hammer "704against the lever J 35 produces :a corresponding suddenms: o1 depression or drive of the stylus, g the latter to -.a :dot on the slsefi After the tower 35 has periormed its upon its stylus, it is returned to its 1 the action oi the weights w withw-hiifii :arms of ithe lever impinged by their n v :are provided, said 'weights performing flihe: function (if "sprin' s :as weld undd the :art. *When 1% e trigger lever L is meleased, the pawl (17 (which is capableoif noscillating inwardly between the for members) will yield and slip past the shoulder n of the hammer lever and resume its position over the shoulder, the parts being thus brought back ,to normal and in readiness for the next @operation. There being three levers 35, a similar-hammer and trigger is provided foneach; but as stated above, a deh member 35 and an opposite direction from the levers L, L.

(Fig. 3), necessitating the reversal of the hammer lever. The manner of mounting however is'immaterial. The lever L is connected by a wire 72 to the free end of the pawl-lever 24 whereby upon the raising of the member L the lever 24 is oscillated u wardly and the ink ribbon corresponding y advanced as already described.

As well understood in the art, the indicator I is provided with a hand or index 73 which is oscillated back and forth by earing in the box 74 at the upper end 0 the hollow stafi 7 5, actuated from the drum D. In the present embodiment of my invention, there is mounted about the axis of the hand 73 on the back of the dial I, a vertically oscillating p'itman or lever 76 rovided with lugs 76 which project throng arcuate slots 78 in the dial I, said lugs being adapted to be alternately struck or en ged by the hand 73 as it approaches the limit of its sweep, the direction of said sweep depending on the direction of rotation of the hosting drum 13. When a lug is thus impinged by the hand the lever is oscillated'in a given direction to an extent permitted by the slots 78, and such oscillation the downmm'fly' tilted and of the lever 76 draws on cable end there being two such ends of 'a common mhle 78' guided over suitable pulleys 79, the opend of the cable 78' connected to the trigger-lever L. A dm 1: *"on either r 7 7. will dwionsly n11 on the main cable 78' and hence raise 1e lever L" with the result that the latter will actuate its the stylus -or marker corresponding "-1. The lever 76 is noranally held to a horizontal position, and returned to such position after any deflection i therefrom by the hand 73, by a torsion .spring of one end of which is secured to the boxing 74 and the other to the hub of the Elever, Fig. 12. Leading from the lever L is :a cable 80 whose opposite end is coupled to onearm of a bell-crank 81 the opposite end of the hell crank being coupled through the cablevc tozthe hammer 'v of the top bell b. 'By pulling on the cable a (from the shafthouse EH) it is apparent that not only will the bell b be sounded but also will the cable '80 be pulled and hence the lever L be lifted with the result that it will actuate its lever are '35 and the latter-"will momentarily depress ing up the piston of the cylinder 85, the

\ tom of the exposed end of :the result that the latter forth, Fig. 14) by the minutes (the drum 13 by "marks 8 representing five seconds.

a half a minute after six oclock the car B memos its stylus. The leverL may have'a cable 82 leading therefrom to the bottom of the mine shaft as shown by dottedlines in Figs. 1 and 2, and be properl coupled so as to actuate the hammer 83 o the bottom bell a; but for deep shafts it is preferable to ring the bottom bell and raise or actuate the lever L' pneumatically and this is done by the following mechanism :Y-Leading to the bottom of theshaft S is' an air pipe 84 the lower-end of which is provided with a piston cylinder 85. By lifting the piston the column of air in the air pipe 1s compressed. On the surface the pipe is provided with two branches 84,84, each of which terminates in a short open-ended cylinder 86 communicating with its respective branch, in which cylinder is mounted a piston or plun ger 87. When the air column in the air signal pipe is compressed by the miner by pus com ressed air causes the plungers 87 to suddbnly pop up, the plunger in the cyl-in derterminating the branch 84' striking the bell a and thus sounding a signal, and the plunger in the branch'84" striking the hot the lever L with actuates its lever 35, and this in turn depresses its stylus or; marker 32.

The 0 oration in a general way may be; describe as follows :For convenience I. will refer to the diagrammatic view in Fig; I L-which shows'a fragment of the recorder sheet R. The spiral line m it will be seen divides the sheet transversel into a series of contiguous spaces in Whic the record is impressed, the spaces being identified by numbers 6 7, 8, 9, and so forth, indicating the time of day beginning with the morning hour six oclock. Every alternate wra of; theline m is divided into sixty main ivisions (identified by numerals 1, 2, 3, and so marks cl representing making one revolution per hour) the spaces between'the minute divisions being subdivided into twelve'spaces To set the drum 13 the gear 5 is uncoupled from shaft 43 rotates in the o the clock-work, by opening the levers or tongs 7, 7, and slipping the gear outwardly along the shaft 6, the drum being turned so as to bring the hour 6 or the space identified by the same, opposite the markers or styli 32 (Figs. 5 and 14). The gear 5 is then set into engagement with the clock and the chronometric rotation of the drum 13 beglns. Let us assume that (Fig. 14) about at the bottom of the shaft is filled with ore and ready to be hoisted. The miner thereupon operates the piston of the cylinder 85, causing a compression of the air column in the pipe 84 and its branches 84', 84",;and

thereby-not only sounding the bottom bell a, but also tripping the trigger L. 'The tripping of the trigger causes a depression of the inner end of the middle lever which thereupon forces its stylus 32 against the drum 13 leaving a dot or impression 100, the bell a sounding a signal to the engineer to start the hoisting drum and pull up the loaded car. As the engineer starts the hoisting drum D, the latter will start the governor G-and' the balls thereof flying outwardly under centrifugal action will depress the spindle 40. The spindle 40 in turn depresses the arm of the rock-shaft 58, causing the arm 64 to be elevated with the result that the extension lever 54 is raised (Figs. 6, 7) and the lever 35 properly depressed to force its stylus against the drum 13. This stylus will consequently mark a line 101 on the record sheet, the length of the line being determined by the length of depression of the particular stylus, such period of time oorrespondin of course to the-number of seconds that t e governor is running orthe'time that the drum D is rotatin to hoist the skip or car B. The particu ar stylus which the lever 35 depresses will depend on the direction in which the drum'D is revolving, and consequently on the direction of rotation imparted to the governor shaft 43. When this shaft revolves in one direction the shift'in lever 49 (Fig. 5) will be oscillated in one direction, causing the link 52 to oscillate the lever 35' laterally to bring its depression and over one of the intermediate styli (Fig. 3), and when the posite direction (due to'a reversal of the oisting drum D for purposes'o'f lowering the empty car and raising the next filled car, the cars operating in pairs, one going down as the other goes up) the lever49 will oscillate the lever 35' in the opposite direction thereby bringing it over the second of the two intermediate styli. When the filled car reaches the top of the shaft and is-ready to be dumped, the hoisting drum D is stopped, and of course, the governor stops, the spindle 40 rising automatically and releasing the lever 60. This permits the shaft 58 to resume its normal position under the-action of the spring 66, allowing the arm 64 to drop and relieving the pull on the link 65. The member 54 under the action of the Weight W impinges against the pin 6 and restores the lever 35 to its raised position, thus relievlng the marker 32 which is raised under the action of the spring 34. As the filled car nears the limit of its upward travel the hand 73 strikes one of the lugs 76, rocking the lever 76 whose depressed end thus pulls on one of the cords 77, and cord 78, and thereby raises the lever L. The raising of this lever actuates one of the outer levers 35 which in turn depresses its stylus the latter leavin an impression or dot 102 on the sheet When the attendant on the surface is ready to signal the engineer to reverse his engine for pur oses of lowering the emptied car he pulls t e cord 0 which thus sounds the top bell b, and at the same time pulls the cord or cable 80 which raises the trigger L, the latter actuatin the opposite outer lever 35 which forces its stylus to roduce an impression 103 on the sheet R. 0 course the engineer can not begin lowering the empty car until he first gets a signal from the man at the bottom of the shaft to pull up the loaded car so the engineer waits till the bottom man again actuates the bottom bell a as already described, and also tripping the lever L whose stylus leaves an impression 104 on the sheet R. The engineer being now free to reverse his hoisting drum, the lever 35' will be shifted to the opposite stylus over which it plays, the said stylus leaving a mark 105 the length of w ich indicates the length of time it took to hoist the filled car. As this car approaches its upward limit the indicator hand again trips the lever 76 but in the opposite direction causing the latter togmll on the oplposit-e cord 77, cord 78 an lever L" w ich actuates its stylus to cause an impression 106 on the sheet R.

The foregoing represents a complete cycle of operations. It will be seen by examining Fig. 14, that the different marks left on the sheet R can be readily referred to the time division marks on the line m, so that the otiice man or superintendent at the end of the day can read ofi the chart a history of the days doings and operations. The interval of time between marks 102 and 104 for example will show how long the top man was engaged in getting the dumped car (the skips ump automatically as a rule) ready for lowering after the car had reached the limit of its upward travel. The length of the mark 101 shows how many seconds were consumed in raising the first car filled; the length of the mark 105 shows how long it too to lower the empty car and raise the filled companion car; the time between marks 103, 104 shows the interval between the top and bottom signals, and so forth. Atthe end of the day the sheet R is removed and the history of the operations of that day may be preserved in the files of the office.

Features shown but not alluded to are well understood in the art and require no description in the present connection. The recorder is not to be understood as restricted in its application to mine-hoisting operations. It may be availed of anywhere where applicable. It may be stated in passing that the middle lever 35 which is the longest of the series,'is guided by a U-shaped strap 90 secured to the boss 91 of the bracket 29. The markers or styli depressed by the lever 35 can' be regarded as the trip markers, because they each record or mark a line on the sheet R indicating the length of time for an upward trip of a filled car or a downward trip of an empty car. The markers 32 controlled by the levers '35 may be considered as the signal and indicator markers, two of them responding to the momentary signals of the top and bottom bell respectively, and the third responding to the indicator hand 73. By responding of course is meant that the levers 35 depress the stylus with the tripping of any of the levers L, L, L". The lever 35' on the other hand has a selective function, depressing the particular stylus which indicates that a full car is being hoisted up the shaft (and an empty car lowered) with a rotation of the hoisting drum D in one direction, and a corresponding action when the drum is reversed, the lever first selecting one marker and then the other. The trip marks 101, 105 therefore indicate opposite directions of rotation of the drum D. Since the lateral sweep of the lever 35" is very slight, the same is shifted over its proper pin 32 by the lever 49 before the governor spindle 40 depresses the arm 60 to rock the shaft 58 in proper direction to lift the extension 54 and hence depress the lever 35'. The pitch of the line m is conformed to the pitch of the threads of the screw-threaded end of the shaft 6, so that as the drum 13 advances axially during its rotation, the markers 32 will always remain in the spaces between the successive wraps of said line (Fi 5, 10). The drum rotates clockwise an advances axially toward the bearing carrying the pin 12, and makes one revolution per hour about its axis. In the present illustration provision is made for thirteen revolutions consuming thirteen hours. The arm 63 (Figs. 3, 5) is not absolutely necessary, but it acts as an arresting device for the shaft 58 when the latter is returned to normal position under the action of the spring 66, and when the governor spindle 40 resumes its highest position at the time the governor is at rest. When the pin 48 reaches either circular terminal of the groove 47 it must be assisted out of it with each reversal of the shaft 43, otherwise it would remain in said circular portion permanently. This assistance comes from the spring arm 150 whose fixed end is secured in any mechanical manner to the outside of the angle 14 through which the link 52 operates. The free end of the spring arm rests in a groove of a collar 151 on sai link; and as the member 150 is flexed to one side or the other of its central position (or dead center) with the reciprocations of the 100 to return to said central position after such flexure (which is obviously at its maximum when the pin 48 is settled in the circular z, a will tend III terminal of the groove 47). Since the flexure referred to is on either side of the dead center depending on which circular end of the groove 47 the pin 48 may happen to be, it follows that with each reversal of the shaft 43, the flexed spring 150 will assist the pin -18 to resume its travel along the spiral portion of the groove toward the opposite circular end thereof. In this way the spring 150 helps to start the pin 48 in its reciprocations with each reversal of the drum D and hence of the shaft 43.

Having described my invention, what I claim is:

1. I11 a mine-hoist recorder, a rotatable drum operated chronometrically and having an axial advance simultaneous with its rotary movement and provided with a record ing surface divided into a series of spiral spaces formed continuous about the drum periphery, and having a pitch conformable to the rate of axial advance of the drum, a series of markers disposed across the axis of the drum and adapted to impress a record in the spiral spaces aforesaid, the record marks having different lengths depending on the length of contact of the markers with the surface of the drum.

2. In the mine-hoist, a rotatable cylindrical member having an axial advance and operated chronometrically and provided with a peripheral writing surface, a hoisting drum rotatable alternately in opposite directions, suitable skips hoisted and lowered by said drum, a spindle governor actuated by the drum, a marker in cooperative relation with said writing surface, and means interposed between the marker and governor for actuating the former with a rotation of the governor in either direction.

3. In a mine-hoist, a rotatable chronometrically operated member provided with a peripheral writing surface and having an axial advance simultaneous with its rotary movement, a series of spring-controlled reciprocating st-yli in cooperative relation with the said surface, a hoisting drum rotating alternately in opposite directions, a spindlegovernor actuated by the drum, a driveshaft for the governor, a stylus-depressing lever adapted to oscillate in a plane to engage the stylus and depress the same, and having a lateral movement independent of said oscillation in the plane aforesaid, means interposed between said lever and the governor-sha ft for controlling said lateral oscillations whereby the lever is first brought over one stylus and then over another depending on the direction of rotation of the hoisting drum and of the governor.

i. In a recorder, a movable member provided with a writing surface, a governor, a shaft for the governor, means for alternately rotating said shaft in opposite directions, a member on the shaft having a spiral groove terminating in circular formations, a lever pivoted at one end and provided with a pin traversing said groove first in one direction and then the other, depending on the direction of rotation of the shaft, a series of reciprocating spring-controlled styli positioned in proximity to the writing surface of the movable member, a vertically oscillating stylus-depressing lever for engaging the upper ends of the styli, said lever having a lateral oscillation independent of its oscillation to and from the styli, a weighted extension pivoted on one end of the stylus-depressing lever, a springcontrolled rock shaft, an arm on the shaft engaging the spindle of the governor, an arm on the shaft extending in the opposite direction from the arm aforesaid, a link connecting the last named arm with the lever extension, a pin on the stylus-depressing lever positioned to be struck by the extension upon release ofthe latter with a rotation of the rock-shaft in one direction, and a link movably coupled to the stylus-operating lever and to the lever engaging the grooved member on the governor-shaft, the parts operating substantially as, and for the purpose set forth.

5. I11 combination with a movable member presenting a writing surface, a hoisting drum adapted to be rotated alternately in opposite directions, an indicator provided with a movable member responsive to the rotation of the drum, a stylus or marker for impinging on the writing surface of the movable member, and means between the stylus and indicator member for actuating the stylus upon the approach of the limit of rotation of the drum in either direction.

6. In combination with a member presenting a writing surface, a stylus for impinging against the same, a hoisting drum, an indicator for the same provided With an oscillating hand or index, a lever mounted pivotally about the axis of the index hand, cable connections leading from opposite ends of the lever, and means interposed between the cable and stylus for actuating the latter upon the approach of the limit of rotation of the drum in either direction.

7. In combination with a member presenting a writing surface, a spring-controlled stylus mounted adjacent the same, a deressing lever ivoted in osition to present the end of one arm thereof over the stylus, a spring-controlled hammer-lever pivoted at a fixed point and terminating in a head or hammer for engaging the bottom of the depressing lever, a trigger-lever pivoted at an intermediate point, a spring-controlled pawl at the end of one arm of the trigger lever engaging the hammer lever, the pawl being adapted to oscillate the hammer lever through a given are with an oscillation of the-trigger lever in proper direction, Whereby th c spring controlling the hammer is subjected to tension, the arts being set to cause the pawl to slip 0 and release the hammer lever with a sweep of the trigger through a given arc, whereby the spring thus under tension draws the hammer lever and hammer thereof into forcible impact with the adjacent arm of the depressing 1ever, and forcing the opposite arm into forcible engagement or impact with the stylus, and. means for actuating the trigger lever.

8. In combination with a reversible rotary drum, a member presenting a writing surface a pair of movable styli for marking on said surface, a member for actuating said styli, and controlling means responsive to the rotations of the drum in either direction for operating said member to present the same first to one stylus and then to the other, according to the direction of rotation of the drum.

9. In combination with a reversible drum, a member presenting a writing surface, a pair of movable styli for markmg on said surface, a depressing device for actuating said styli, controllin means responsive to the successive rotations of the drum for operating said device to present the same in operative relation first with one stylus and then the other and means controlled by the rotations of the drum for forcing the depressing device into engagement with its stylus.

10. In combination with a rotatable drum operatedchronometricallys and having an axial advance simultaneous with its rotary movement and provided with a recordin surface, a marker positioned opposite said surface and normally out of contact therewith, a member for impinging against said marker and forcin the same into contact with said surface uring the axial and. rotary movements of the drum, means for actuating the member aforesaid from a point removed a suitable distance from the drum, and means for restorin the marker to its normal position after t e desired impresiion is made thereby on the recording surace.

In testimony whereof I aflix my signature, in presence of two witnesses.

ORIE W. INGELS.

Witnesses:

Emu. STAREK, FANNIE E. WEBER. 

